回归系数

• Using the regional trial data of guangdong hybrid rice in 1994 and 1995 , and regional trial data of national late hybrid indica rice in 1995 and 1996 , by t test , variation coefficient and regress coefficient , analysis and compare with the fertility character , steady character and adaptive character of teyou 524 and ck ( shanyou 63 , shanyougui 33 ) , the result showed : it was obviously that the fertility character and adaptive character of teyou 524 was better than ck , but steady character was between shanyou 63 and shanyougui 33 , it was a quite good lat - mature and high - yield new hybrid rice combination
  摘要利用1994和1995两年广东省杂交稻区域性试验资料以及1995和1996两年全国?型杂交晚稻区域性试验资料，通过t检验、变异系数和回归系数分别对特优524和对照种（汕优63 、汕优桂33 ）的丰产性、稳定性和适应性进行分析和比较，结果表明：特优524的丰产性、适应性均明显地优于对照种，而稳定性则次于汕优63 ，但好于汕优桂33 ，是一个较为理想的迟熟高产杂交稻新组合。
• We make the following assumption for when 2 is positive definite matrix , different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents . considered 2 is nonnegative definite matrix , this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated . next , we discuss some necessary and sufficient conditions of the equality of the lse and blue , then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix , meanwhile a relative efficiency of lse ofb is proposed and its bound is given
  当0时，众多文献讨论了回归系数阵的各种估计及lse的有效性，本文考虑了当0的情形，给出了回归系数阵b及其可估参数函数kbl的在矩阵非负定意义下的最优估计( blue ) ，研究了它的一个最大概率性质，并且讨论了最小二乘估计成为最佳线性无偏估计的充分必要条件，在此基础上给出了均值矩阵的最小二乘估计与blue的偏差估计，定义了lse相对于blue的一个相对效率，并给出了它的界。
• However , two - stage estimates of regression coefficients corresponding to these two estimates have approximate equal mean square error . for testing linear hypothesis about regression coefficients , banerjee and magnus ( 1997 ) studied the sensitivity of f - test sta , tistic ( fgls ( ) ) based on generalized least square estimate caused by variance parameter in general case and proposed sensitivity statistic and its distribution
  关于回归系数的线性假设检验问题， banerjee和magnus ( 1997 )在一般情况下从理论上研究了方差参数对基于广义最小二乘估计的f -检验统计量( f _ ( gls ) ( ) )的种种影响，提出了敏感性的概念，并给出敏感统计量的形式及其分布。
• On the base of the single factor , three c sources , three n sources and mineral were selected for the homogeneous test . the results of the coefficients showed that the influence of peptone was the most important ; then corn steep liquor , lactose and cuso4 5h2o ; the effects of others were small
  在单因素试验基础上对菌体生长比较有利的3种碳源、氮源和无机盐进行了均匀试验，标准回归系数表明；蛋白胨的影响最为显著，其次为；玉米浆，乳糖， cuso _ 4 ? 5h _ 2o ，其他影响不大。
• The present paper gives some profound results of linear biased estimation of regression coefficients which include linear biased estimation for the minimum mean square error , the necessary and sufficient conditions for the linear biased estimation superior to least square estimation , the necessary and suffic ) ent conditions for the admissibility of linear biased estimation and some linear biased estimators not included in the literatures
  摘要给出回归系数的最小均方误差线性有偏估计、线性有偏估计优于最小二乘估计的充要条件及线性有偏估计为可容许估计的充要条件，同时给出文献中未涉及的一些有偏估计。
• Experiments show that a relatively good recognition performance could be achieved by combing such features as 1 ) the baseband and coefficients of inverse spectrum obtained using lpc analysis , 2 ) the difference - value of basis frequencies and coefficients of the difference - value of the inverse spectrum , which worked as the linear regressive coefficients
  采用lpc分析得到的倒谱系数和基频与作为一阶回归系数的差值倒谱系数和差值基频等参量组合应用可得到较好的识别效果。
• After synthetically analyses and researches of the existing methods for injection allocation rate , this article takes the group of water - injecting wells in waterflood oilfield as the research unit , the multiple regression method to decide the injection allocation rate is applied , by which and its regression coefficient and partial correlation coefficient , the multivariate regression models of model and model are developed
  在对目前存在的配注方法的综合分析和研究之后，提出以水驱油田注水井井组为研究单元，采用多无回归方法来确定注水井井组配注量，并基于多元回归方法的回归系数和偏相关系数，分别建立了多元回归模型、 。
• Abstract : since the multiple failures situation is not uncommon in the clinical medicine , we explore the use of proportional odds model to the multivariate interval - censored data . the approach is based on the conditional logistic regression , which prevents the complications in the existence of nuisance parameters . the estimation of parameters is obtained by the newton - raphson algorithm . the sandwith estimator for the covariance is made according to the situation where there is correlation in the score statistic . simulations are also presented to assess the accuracy of the procedure
  文摘:探索比例优势模型在临床医学中常见的多结局区间截断数据中的应用.用条件的逻辑回归方法避免讨厌参数的估计,用牛顿-拉普森算法估计回归系数,用"夹心方差"估计量作为参数方差的估计.通过随机模型检验模型应用的有效性